沟槽滤嘴烟气流场分布特征的计算流体力学模拟
|
摘要
为研究卷烟烟气在沟槽滤嘴内的流场分布情况以及沟槽流出烟气占比(从沟槽流出烟气占进入滤嘴全部烟气的比例),建立了烟气在沟槽滤嘴内流动的计算流体力学模型。利用该模型模拟了ISO抽吸模式平均速度下烟气在沟槽滤嘴内的流动,获得了沟槽滤嘴内速度和压力分布情况,并计算得到从沟槽流出的烟气占比,探讨了滤嘴沟槽的形状、数量和长度对于沟槽流出烟气占比的影响。结果表明:(1)沟槽流出烟气占比随沟槽长度的增加先缓慢增加然后逐渐减小。(2)沟槽流出烟气的占比随着沟槽数目呈线性增加趋势。(3)沟槽流出烟气占比的顺序为:矩形沟槽结构>三角形沟槽结构>梯形沟槽结构。模拟结果与实验或文献报道的结果具有较好的一致性。
A computational fluid dynamics model for the smoke flow in a grooved filter was developed in order to study the flow field distribution in the grooved filter and the outflowing smoke ratio(the proportion of cigarette smoke leaving the grooves accounting for the total smoke entering into the grooved filter). By means of the developed model,the smoke flow in grooved filter at an average velocity of ISO smoking regime was simulated,the distribution of velocity and pressure of cigarette smoke in grooved filter was obtained,and the ratio of smoke leaving the grooves was calculated. The effects of factors such as the shape,number and depth of grooves on the ratio were investigated as well. The results showed that:1)The ratio of smoke leaving the grooves slowly increased first and then gradually decreased with the increase of groove length. 2) The said ratio linearly increased with the increase of groove number. 3)The groove shapes affected the ratio in the order of rectangular > triangle > trapezoid. The simulation results well agreed with study results by other researches.
A computational fluid dynamics model for the smoke flow in a grooved filter was developed in order to study the flow field distribution in the grooved filter and the outflowing smoke ratio(the proportion of cigarette smoke leaving the grooves accounting for the total smoke entering into the grooved filter). By means of the developed model,the smoke flow in grooved filter at an average velocity of ISO smoking regime was simulated,the distribution of velocity and pressure of cigarette smoke in grooved filter was obtained,and the ratio of smoke leaving the grooves was calculated. The effects of factors such as the shape,number and depth of grooves on the ratio were investigated as well. The results showed that:1)The ratio of smoke leaving the grooves slowly increased first and then gradually decreased with the increase of groove length. 2) The said ratio linearly increased with the increase of groove number. 3)The groove shapes affected the ratio in the order of rectangular > triangle > trapezoid. The simulation results well agreed with study results by other researches.
引文
[1]段良勇,顾永圣,张映,等.醋纤沟槽滤棒沟槽长度及位置分布对卷烟烟气的影响[J].烟草科技,2014(11):5-9.DUAN Liangyong,GU Yongsheng,ZHANG Ying,et al.Effects of length and position of grooved section in grooved acetate filter on yield of cigarette smoke[J].Tobacco Science&Technology,2014(11):5-9.
[2]盛培秀.沟槽醋酸纤维滤棒的开发[J].烟草科技,2004(4):17-19,22.SHENG Peixiu.Development of grooved acetate filter rod[J].Tobacco Science&Technology,2004(4):17-19,22.
[3]李海峰,汤德芳,王辉.沟槽滤嘴对中式低焦油卷烟主流烟气的影响[J].安徽农业科学,2012,40(28):14022-14024,14027.LI Haifeng,TANG Defang,WANG Hui.Effects of grooved filter on mainstream cigarette smoke of Chinese low-tar cigarettes[J].Journal of Anhui Agricultural Sciences,2012,40(28):14022-14024,14027.
[4]Baker R R.Temperature variation within a cigarette combustion coal during the smoking cycle[J].High Temperature Science,1975(7):236-247.
[5]Baker R R.Gas velocities inside a burning cigarette[J].Nature,1976,264(5582):167-169.
[6]Saidi M S,Hajaligol M R,Rasouli F.An experimental and numerical analysis of puff hydrodynamics[J].Beitr?ge zur Tabakforschung International/Contributions to Tobacco Research,2004,21(3):157-166.
[7]王乐,李斌,鲁端峰,等.不同抽吸状态下卷烟动态通风特征的数值模拟[J].烟草科技,2016,49(1):60-65.WANG Le,LI Bin,LU Duanfeng,et al.Numerical simulation of dynamic ventilation characteristics of cigarette at different puff profiles[J].Tobacco Science&Technology,2016,49(1):60-65.
[8]WEN Jianhui,DU Wen,ZHONG Kejun,et al.Computational fluid dynamics simulation of cigarette smoke particle retention in filter tip[J].Tobacco Science&Technology,2015,48(S1):39-45.
[9]李艳平,文建辉,彭斌,等.不同结构滤嘴的烟碱截留效率和空间分布模式[J].烟草科技,2013(2):57-61.LI Yanping,WEN Jianhui,PENG Bin,et al.Filtration efficiencies and spatial distribution patterns of nicotine in filters of different structure[J].Tobacco Science&Technology,2013(2):57-61.
[10]Ding Y,Kawahara M.Three-dimensional linear stability analysis of incompressible viscous flows using the finite element method[J].International Journal for Numerical Methods in Fluids,1999,31(2):451-479.
[11]孙志伟.卷烟滤嘴中烟气流动以及颗粒有害成分过滤截留的CFD模拟研究[D].长沙:湖南大学,2016.SUN Zhiwei.CFD simulation research of smoke flow and particle of harmful ingredients interception in filter[D].Changsha:Hunan University,2016.
[12]Haelssig J B,Tremblay A Y,Thibault J,et al.Direct numerical simulation of interphase heat and mass transfer in multicomponent vapour-liquid flows[J].International Journal of Heat and Mass Transfer,2010,53(19/20):3947-3960.
[2]盛培秀.沟槽醋酸纤维滤棒的开发[J].烟草科技,2004(4):17-19,22.SHENG Peixiu.Development of grooved acetate filter rod[J].Tobacco Science&Technology,2004(4):17-19,22.
[3]李海峰,汤德芳,王辉.沟槽滤嘴对中式低焦油卷烟主流烟气的影响[J].安徽农业科学,2012,40(28):14022-14024,14027.LI Haifeng,TANG Defang,WANG Hui.Effects of grooved filter on mainstream cigarette smoke of Chinese low-tar cigarettes[J].Journal of Anhui Agricultural Sciences,2012,40(28):14022-14024,14027.
[4]Baker R R.Temperature variation within a cigarette combustion coal during the smoking cycle[J].High Temperature Science,1975(7):236-247.
[5]Baker R R.Gas velocities inside a burning cigarette[J].Nature,1976,264(5582):167-169.
[6]Saidi M S,Hajaligol M R,Rasouli F.An experimental and numerical analysis of puff hydrodynamics[J].Beitr?ge zur Tabakforschung International/Contributions to Tobacco Research,2004,21(3):157-166.
[7]王乐,李斌,鲁端峰,等.不同抽吸状态下卷烟动态通风特征的数值模拟[J].烟草科技,2016,49(1):60-65.WANG Le,LI Bin,LU Duanfeng,et al.Numerical simulation of dynamic ventilation characteristics of cigarette at different puff profiles[J].Tobacco Science&Technology,2016,49(1):60-65.
[8]WEN Jianhui,DU Wen,ZHONG Kejun,et al.Computational fluid dynamics simulation of cigarette smoke particle retention in filter tip[J].Tobacco Science&Technology,2015,48(S1):39-45.
[9]李艳平,文建辉,彭斌,等.不同结构滤嘴的烟碱截留效率和空间分布模式[J].烟草科技,2013(2):57-61.LI Yanping,WEN Jianhui,PENG Bin,et al.Filtration efficiencies and spatial distribution patterns of nicotine in filters of different structure[J].Tobacco Science&Technology,2013(2):57-61.
[10]Ding Y,Kawahara M.Three-dimensional linear stability analysis of incompressible viscous flows using the finite element method[J].International Journal for Numerical Methods in Fluids,1999,31(2):451-479.
[11]孙志伟.卷烟滤嘴中烟气流动以及颗粒有害成分过滤截留的CFD模拟研究[D].长沙:湖南大学,2016.SUN Zhiwei.CFD simulation research of smoke flow and particle of harmful ingredients interception in filter[D].Changsha:Hunan University,2016.
[12]Haelssig J B,Tremblay A Y,Thibault J,et al.Direct numerical simulation of interphase heat and mass transfer in multicomponent vapour-liquid flows[J].International Journal of Heat and Mass Transfer,2010,53(19/20):3947-3960.